In no particular order of importance:
Handcrafting Bamboo fly Rods, Wayne Cattanach
The Lovely Reed, Jack Howell
A Masters Guide to Building a Bamboo Fly Rod, Hoagy Carmichael, Everett Garrison
Fundamentals of Building a bamboo fly Rod, George Maurer, Bernard Elser.
I have plenty of other terrific books by Barch, Sinclair, Barnes, Harms, Gould, Kirkfield, Holden, Wells and a host of others but my top four for new builders are listed above. Over time you can get all the others too, why not, they are a labour of love and deserve a place in any collection.